Hooray for English majors! I used to major in nursing, but nuts to that! Now all of my finals are open note, open book, and in essay form, and English makes me much happier than memorizing what happens to the vagus nerve when you bear down (blood pressure drops significantly, by the way)

There's only one answer on multiple guess exams, but you can certainly attempt to bullshit your way through an essay exam... Most people call that "extending their answers."